A hydraulic servomechanism with mechanical feedback is shown in Figure P2.20 .The power piston has an area

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A hydraulic servomechanism with mechanical feedback is shown in Figure P2.20 .The power piston has an area equal to A. When the valve is moved a small amount Δz, the oil will flow through to the cylinder at a rate p. Δz, where p is the port coefficient. The input oil pressure is assumed to be constant. From the geometry, we find that

(a) Determine the closed-loop signal-flow graph or block diagram for this mechanical system. 

(b) Obtain
the closed-loop transfer function Y(s)/X(s). 

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Modern Control Systems

ISBN: 9780137307258

14th Edition

Authors: Richard C. Dorf

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